Mode space approach for tight-binding transport simulation in graphene nanoribbon FETs

Roberto Grassi, Antonio Gnudi, Elena Gnani, Susanna Reggiani, Giorgio Baccarani

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Scopus citations

Abstract

A mode space tight-binding approach for the simulation of armchair graphene nanoribbon FETs is discussed. It makes use of slab-dependent modes and a novel criterion for mode selection going beyond the one based on the lowest energy subbands. For ideal ribbons we show that, by splitting the modes into decoupled groups, the new method provides results almost identical to the real space with a speedup of more than one order of magnitude. Even in the presence of edge roughness, which tends to couple the modes, the mode space approach still offers a sizable computational advantage with respect to the real space, while retaining a good accuracy.

Original languageEnglish (US)
Title of host publicationProceedings - 2009 13th International Workshop on Computational Electronics, IWCE 2009
DOIs
StatePublished - Oct 27 2009
Event2009 13th International Workshop on Computational Electronics, IWCE 2009 - Beijing, China
Duration: May 27 2009May 29 2009

Publication series

NameProceedings - 2009 13th International Workshop on Computational Electronics, IWCE 2009

Other

Other2009 13th International Workshop on Computational Electronics, IWCE 2009
CountryChina
CityBeijing
Period5/27/095/29/09

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